Intercommunication apparatus

- U.S. Philips Corporation
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Description

FIG. 1 is a perspective view of the intercommunication apparatus showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view;

FIG. 4 is a right side elevational view;

FIG. 5 is a front elevational view; and

FIG. 6 is a rear elevational view.

Referenced Cited
U.S. Patent Documents
3258541 June 1966 Hopkins
3286040 November 1966 Andregg et al.
3428758 February 1969 Hall et al.
3515814 June 1970 Morgan
D220338 March 1971 Goldman et al.
D225648 December 1972 Barrault
D225747 January 1973 Haaheim et al.
D232034 July 1974 Shoys
Patent History
Patent number: D243536
Type: Grant
Filed: Sep 11, 1974
Date of Patent: Mar 1, 1977
Assignee: U.S. Philips Corporation (New York, NY)
Inventor: Rebertus VAN DE Poel (Eindhoven)
Primary Examiner: Bernard Ansher
Attorney: Frank R. Trifari
Application Number: 5/504,913
Classifications
Current U.S. Class: D14/57
International Classification: D1403;